Stone-working machine



(No Model.) 2 sneetsf-sheet 1.

SQHERNON'.

STONE AWORKING MACHINE. Nu-13,969., A Patented Jmvsmsgr.

f ,A I :u fr i` .a

" I vl A |4 W Y Y '-/C y /C v\ Y v I, n

C/ I `@ii tyd' 1 I g' I' C" l. ir' y F /C C i /C C wtf/IJ I I 'er r w iV lr/ l fl 5M JK' L 1' 6 \J' *Ef/.1 7L" l gli" fr/ .M

2 Sheets- Sheet 2.

'(Na Model.)

S HERNON STONE WQRKING MACHINE.

Ia-513,969. Patented Jan. so, 1894.

c P v llamaron. n. c.

UNITED STATES PATENT OFFICE.

STEPHEN HERNON, OF LOS ANGELES, CALIFORNIA.

STONE-WORKING MACHINE.

SPECIFICATION forming part of Letters Patent No. 513,969, dated January30, 1894.

Application filed January 31, 1893. Serial No. 460,258. (No model.)

To all whom it may concern:

.Be it known that I, STEPHEN I-lERNoN, a subject of the Queen of GrreatBritain, residing at Los Angeles, in the county of Los Angeles and Stateof California, have invented a new and useful Stone-Working Machine, ofwhich the following is a specification.

I The object of my invention is to produce a machine by which theoperation of removing the inequalities of surface from building andother stone may be effectively accomplished by the use of a machineoperated by means of steam or other power in place of manual labor. .Y

The accompanying drawings illustrate my invention.

Figure l is a front view of a machine embodying my invention, partsbeing shown in section to illustrate the construction. Fig. 2 is afragmentary view of the lower portion of the hammer frame. Fig. 3 is alongitudinal sectional view of the same on line ,z-'z Fig. 2. Fig. 4 isa sectional view on line -x Fig. l looking toward the left. Fig. 5 is aplan view of the machine-showing the power shaft supporting frame bentor swung to one side. Fig. 6is a sectional view on line y--y Fig. 1looking toward the right. Fig. 7 is a fragmentary view of one of thestone working tools removed from the machine. This form is differentfrom that shown in the machine and is interchangeable therewith.

Parts are shown in section to illustrate the construction.

My invention is designed to operate stone working tools by means ofsteam or other power, and allow the tools to be moved back and forthupon the stone while in operation to avoid as much as possible the laborand expense of moving the stone to bring it into the proper position tobe operated upon by the stone working tools.

My invention is designed to be provided with interchangeable tools sothat the roughness may first be removed- :from the surface of the rockor stone by means of a point which is driven forcibly against the stoneby means of a reciprocating hammer driven by steam or. other power, andwhich point can be moved to and fro upon the stone by the operator tocause the point to strike against different portions of the stone atsuccessive blows of the hammer without moving the stone, and v beremoved from the machine and a finishing tool put in the place thereofso that by the operation of the one machine, I am `able to complete theoperation of dressing the stone ready for use.

In the drawings, A is a suitably arranged supporting column, havingjournaled in its upper portion one end of the power shaft A which isarranged to be driven by steam or other power (not shown).

Bis a horizontal swinging frame having one end secured to the support Aand having its other en d free to allow it to swing in the arc ofacircle in a horizontal plane. This frame is formed of two girders C Carranged in the same vertical plane and connected with each otherbymeans of braces O arranged at intervals along their length. Thesegirders are each provided with jointsc c correspondingly arrangedopposite each other and between each set of connecting braces to allowhorizontal but not vertical movement of the outer end of the frame andthus permit the outer end of the frame to swing in a horizontal plane.

These girders may be made flexible instead of jointed; `but I considerthe jointed form shown to be preferable.

D is a flexible driving shaft formed of coiled springA and arranged tocommunicate power from the power shaft A to the hammer or toolreciprocating mechanism E which is suspended from the outer end of theframe B. The spring-drivingy shaft is arranged longitudinal the frame Band vjonrnaled in the `braces C.

F is the driving band wheel and F is the power pully arranged upon thepower shaft.

F is an idle wheel.

f is the power band or belt.

The band wheel F which communicates the power to the flexible shaft D,and the band wheel D which transmits the power from the flexible shaftto the tool reciprocating mechanism are respectively secured to rigidshafts d d and these shafts are each journaled in suitable rigidsupports such as the supporting column A and braces O, and the ends ofthe iiexible shaft are respectively secured to the ends of such rigidshafts. This construction is common however and does not requireillustration in detail.

IOO

G is a pendent tool-reciprocating-mechanism-supporting frame pivoted tothe horizontal frame B and having its pivotal point coaxial with thedriving shaft D. As shown in the drawings the two side members g g arerespectively j ournaled upon the rigid shaft d'.

H is a hammer which is secured to an actuating rod H which extendsupward, passing through suitable guides I I and is provided with a camengaging pin h which is arranged in the path of the revolving camsJwhich are secured to a shaft J which is journaled in the frame G and isprovided with a band wheel L which is arranged to be rotated by means ofa belt or band trained around such wheel and around the band Wheel Dupon the shaft ol. By having the pivotal point of the frame G co-aXialwith the axis of the driving shaft D the belt Z always retains the sametension no matter which way the frame G is swung.

M is a point or tool arranged in the bottom of the frame G, and in thepath of the reciprocating hammer to receive blows therefrom. This pointor tool is provided on its upper end with a stop or head M and the pointis heldin position by means of the walls of the opening m which isprovided in the bottom of the frame G for it to pass through.

m is a spring arranged to hold the point normally elevated to receivethe blow from the hammer H.

A segmental cog rack N is fixed to the frame B and ratchet N is securedto the reciprocating-mechanism-supporting frame to allow the frame to beswung into differentinclinations and there retained.

h is a spring arranged to force the hammer downward to give increasedforce to the stroke. This is especially important when the frame G isinclined as shown in Fig. 6. The bottom g of the frame G is cylindricaland dle G to allow the bottom of the frame to be rotated to turn thepoint around when desired by the operator.

The cams J J are secured to the cam shaft J by means of a bolt j, andwhen it is desired to change the stroke of the hammer I-l a new set ofcams of greater or less length may be attached to the cam shaft to givea heavy or light blow as may be desired by the operator. These extracams are not shown neither is the manner of securing the cams to theshaft illustrated in detail. This con struction will readily beunderstood by mechanics by reference to Fig. 4 and further illustrationis unnecessary.

In practice the power is applied to rotate the power shaft A', the beltfis shifted from the idle wheel F to the power wheel F and rotates thedriving pulley F which rotates the shaft f and the flexible drivingshaft D, which in turn rotates the shaft d and the pulley D. The belt Zturns the band. wheel L and the cam shaft J causing the cams J J to actagainst the pin h to raise the hammer Il handle P and secured by a uutp.

through the medium of the rod H. Thus at each revolution of the camshaft two blows are delivered, upon the point by the hammer. Theoperator adjusts the frame to any pitch desired by means of the rack Nand ratchet N', and by means of the handle G swings the frame to theright or left, the point M moving in the arc of a circle as illustratedin Fig. 5. The 'flexible shaft D will permit of considerable movement ofthe pendent swinging frame G without causing too much friction of theshaft D with the journals in the braces C.

ln Fig. 6 the position of the parts when a stone is being dressed with apoint is clearly illustrated. O represents the stone. Vhen the roughportions have been removed with the point, a bush hammer P is placed inthe machine in place of the hammer H and the point M. The cam engagingpin 7L upon the bush hammer handle P is reduced at its inner end and ispassed through a holep in the The handle P" is also screwed into thebush hammer frame P". The cam pin of the hammer handlelfl is secured tothe handle in the same manner, and the handle is also screwed into thehammer Il. When it is desired to take the hammer out of the frame G, thecam Jis turned to fully elevate the hammer so it may be unscrewed fromthe handle and the hammer removed, the pin 7i is removed from the handleand the handle is slipped out of the guides I I. The spring m isreleased from its engagement with the point M and the point is slippedup and out of the frame G.

To place the bush hammer in position the pin 7L is removed from thehandle P and the handle is slipped up through the openings (not shown)in the guides I I'. Then the pin h is inserted in place and secured bythe `nut p. is provided with a swiveljoint g" and a han- In dressing thestone with the bush hammer it is necessary to turn the hammer as theframe B is swung in the arc of a circle to cause the lines left by thehammer to be in parallel rows upon the surface of the rock, and not inconcentric arcs of a circle. To accomplish this end a hammer turninghandle P is attached to the hammer by which the hammer may be turned,the screw connection between the hammer and the handle P" permitting thehammer to be turned without turning such handle. i

The stone is mounted upon a car (not shown) which may be arranged to runlongitudinal of the frame B, or transverse the length of the frame, asmay be deemed most desirable.

Now, having described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a stone working machine the combination set forth of ahorizontally arranged frame comprising two girders arranged in the samevertical plane and connected to each other by braces and provided withjoints respectively arranged opposite each other be TOO IIO

tween each set of braces; a flexible driving v shaft arrangedlongitudinally of such frame and journaled therein; a pendent framesupporting the tool-reciprocating mechanism and pivoted to the free endof the horizontal frame and arranged at its lower end to receive a stoneWorking tool; a hammer arranged within the pendent frame and adapted tobe reciprocated to strike the stone working tool; an upwardly extendingrod secured to such hammer and provided with the cam engaging pinarranged in the path of the revolving cams; such cams secured to a shaftj ournaled in the pendent frame; such shaft, and suitable operativemeans connecting the cam shaft with the driving shaft.

2. In a stone working machine the combination with a horizontallyarranged frame comprising two girders arranged in the same verticalplane and connected to each other by braces and provided with jointsrespectively arranged opposite each other and between each set ofbraces; of a flexible driving shaft arranged longitudinally of the frameand journaled in such frame; a pendent frame supporting thetool-reciprocating mechanism and having its pivot co-axial with thedriving shaft; a suitable stone working tool having its handle arrangedto reciprocate in such pendent frame, and suitable tool reciprocatingmechanism arranged in ysuch pendent frame and adapted to reciprocatesuch tool; suitable means operatively connecting the driving shaft withthe tool reciprocating mechanism, and suitable means for rotating thedriving shaft.

3. A stone working machine comprising the combination of ahorizontallyarranged jointed frame secured at one end to a suitable support providedalong its length with joints adapted to allow horizontal but notvertical movement of such frame and having its other end free andarranged to swing inthe arc of a circle parallel with the horizon; aexible driving shaft journaled in such horizontal frame; a pendent framesupporting the toolreciprocating mechanism and pivoted to the free endof the horizontally arranged trame and having its pivot co-axial withthe axis of the iiexible driving shaft; suitable tool reciprocatingmechanism arranged in such pendent frame and adapted to reciprocate astone working tool; such tool and suitable means connecting the toolreciprocating mechanism l with the driving shaft.

s' STEPHEN HERNON.

Witnesses JAMES R. ToWNsEND, FRANK B. ALvERsoN.

